Ergun.C

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#include "Ergun.H"
#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
namespace dragModels
{
    defineTypeNameAndDebug(Ergun, 0);
    addToRunTimeSelectionTable(dragModel, Ergun, dictionary);
}
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::dragModels::Ergun::Ergun
(
    const dictionary& dict,
    const phaseInterface& interface,
    const bool registerObject
)
:
    dispersedDragModel(dict, interface, registerObject)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::dragModels::Ergun::~Ergun()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::tmp<Foam::volScalarField> Foam::dragModels::Ergun::CdRe() const
{
    const phaseModel& dispersed = interface_.dispersed();
    const phaseModel& continuous = interface_.continuous();

    return
        (4.0/3.0)
       *(
            150
           *max(1 - continuous, dispersed.residualAlpha())
           /max(continuous, continuous.residualAlpha())
          + 1.75
           *interface_.Re()
        );
}


// ************************************************************************* //